NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2001013
SUBJ: SVN21 (PRN21) FORECAST OUTAGE SUMMARY JDAY 019/1422 - JDAY 019/1821
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 2001013
       NANU DTG: 191815Z JAN 2001
       REFERENCE NANU: 2001011
       REF NANU DTG: 122007Z JAN 2001
       SVN: 21
       PRN: 21
       START JDAY: 019
       START TIME ZULU: 1422
       START CALENDAR DATE: 19 JAN 2001
       STOP JDAY: 019
       STOP TIME ZULU: 1821
       STOP CALENDAR DATE: 19 JAN 2001

2.  CONDITION: GPS SATELLITE SVN21 (PRN21) WAS UNUSABLE ON JDAY 019
    (19 JAN 2001) BEGINNING 1422 ZULU UNTIL JDAY 019 (19 JAN 2001)
    ENDING 1821 ZULU.

3.  POC: CIVILIAN - NAVCEN AT (703)313-5900, HTTP://WWW.NAVCEN.USCG.MIL
    MILITARY - 1LT HERB KNIERIM, 2 SOPS NAVIGATION ANALYST, DSN 560-2744,
    COMM 719-567-2744, GPS@SCHRIEVER.AF.MIL, HTTP://WWW.SCHRIEVER.AF.MIL/GPS